JPH01131177U - - Google Patents

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Publication number
JPH01131177U
JPH01131177U JP2594788U JP2594788U JPH01131177U JP H01131177 U JPH01131177 U JP H01131177U JP 2594788 U JP2594788 U JP 2594788U JP 2594788 U JP2594788 U JP 2594788U JP H01131177 U JPH01131177 U JP H01131177U
Authority
JP
Japan
Prior art keywords
control transistor
line
current line
power supply
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2594788U
Other languages
Japanese (ja)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP2594788U priority Critical patent/JPH01131177U/ja
Publication of JPH01131177U publication Critical patent/JPH01131177U/ja
Pending legal-status Critical Current

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  • Measurement Of Current Or Voltage (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案による直流電源線路異常検出装
置の基本的な実施例における要部概略構成図、第
２図は従来の直流電源線路短絡検出装置の概略構
成図、である。 図中、１０は交流電源、１１は整流ブリツジ、
２１はオン・オフ制御トランジスタ、３０は電源
線路異常検出回路、３１はコレクターエミツタ間
の電圧異常検出回路、３２，３３は電圧異常検出
のための電圧検出抵抗、３４は検出された電圧値
に基づいて異常電圧状態でオン・オフ制御トラン
ジスタを強制的にターン・オフするスイツチング
・トランジスタ、である。 FIG. 1 is a schematic diagram of a main part of a basic embodiment of a DC power line abnormality detection device according to the present invention, and FIG. 2 is a schematic diagram of a conventional DC power line short circuit detection device. In the figure, 10 is an AC power supply, 11 is a rectifier bridge,
21 is an on/off control transistor, 30 is a power line abnormality detection circuit, 31 is a collector-emitter voltage abnormality detection circuit, 32 and 33 are voltage detection resistors for detecting voltage abnormality, and 34 is a circuit for detecting a detected voltage value. This is a switching transistor that forcibly turns off an on/off control transistor in an abnormal voltage state based on the voltage.

Claims (1)

【実用新案登録請求の範囲】 回路電源を整流した直流電流線路の短絡または
異常な低インピーダンス状態を検出する直流電源
線路異常検出装置であつて； 制御入力となる一端子と、該制御入力にオン指
令信号が与えられているときに導通する主電流線
路の両端となる二つの端子を少なくとも有し、該
主電流線路が上記直流電源線路に直列に介挿され
たオン・オフ制御トランジスタと； 該オン・オフ制御トランジスタの上記主電流線
路両端電圧を監視し、該電圧が所定の電圧以上と
なつたとき、上記オン指令信号を該オン・オフ制
御トランジスタの上記制御入力から除去し、該オ
ン・オフ制御トランジスタを非道通とするスイツ
チング回路と； を有することを特徴とする直流電源線路の異常検
出装置。[Claims for Utility Model Registration] A DC power line abnormality detection device for detecting a short circuit or an abnormally low impedance state in a DC current line rectified circuit power supply; an on/off control transistor having at least two terminals serving as both ends of a main current line that conducts when a command signal is applied, the main current line being inserted in series with the DC power supply line; The voltage across the main current line of the on/off control transistor is monitored, and when the voltage exceeds a predetermined voltage, the on command signal is removed from the control input of the on/off control transistor, and the on/off control transistor is turned off. 1. An abnormality detection device for a DC power supply line, comprising: a switching circuit that makes an off-control transistor a non-circuit; and;
JP2594788U 1988-03-01 1988-03-01 Pending JPH01131177U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2594788U JPH01131177U (en) 1988-03-01 1988-03-01

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2594788U JPH01131177U (en) 1988-03-01 1988-03-01

Publications (1)

Publication Number Publication Date
JPH01131177U true JPH01131177U (en) 1989-09-06

Family

ID=31247124

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2594788U Pending JPH01131177U (en) 1988-03-01 1988-03-01

Country Status (1)

Country Link
JP (1) JPH01131177U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05142281A (en) * 1991-11-21 1993-06-08 Kansai Electric Power Co Inc:The Short-circuit tester

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6093962A (en) * 1983-10-28 1985-05-25 Yamatake Honeywell Co Ltd Over current detecting circuit of electronic switch

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6093962A (en) * 1983-10-28 1985-05-25 Yamatake Honeywell Co Ltd Over current detecting circuit of electronic switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05142281A (en) * 1991-11-21 1993-06-08 Kansai Electric Power Co Inc:The Short-circuit tester

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